Illness anxiety disorder
When fears about your health keep returning, you may spend a lot of time searching, checking or trying to feel certain. You can ask for help with that worry while still receiving appropriate care for physical symptoms.
When health-related worry takes over more of your day.
Health anxiety describes worry about being ill or becoming ill that interferes with life. It can involve repeated checking or reassurance-seeking, as well as avoiding health information or appointments.
Illness anxiety disorder is a clinical term. In the DSM framework, the concern centres on having or acquiring serious illness despite absent or relatively mild physical symptoms. Assessment considers the ongoing pattern and other explanations.
Based on NHS · MSD Manual Professional
Worry and medical care are different questions.
- The worry
What you fear about your health
- The responses
Checking, reassurance or avoidance
- The impact
What worry interrupts in your day
- The plan
Help for worry and appropriate medical care
Health worry can take up time, attention and energy.
Worry about illness may lead to repeated checking, searching or requests for reassurance. Some people instead avoid health information or appointments. The concern is how the pattern affects life, not whether someone has asked a medical question.
Illness anxiety is a clinical term within a wider health-anxiety context. A professional assessment considers the actual concerns and appropriate medical evaluation.
Based on NHS · MSD Manuals
Describe the worry, its context and its cost.
These examples do not establish a diagnosis or tell you whether a physical symptom is harmless.
Returning worries
Health worries returning after reassurance.
Checking & searching
Repeated searching, body checking or requests for certainty.
Reassurance
Avoiding appointments or activities because of illness fears.
Avoidance & impact
Worry interrupting work, relationships or time you want for other things.
Based on NHS · MSD Manual Professional
Checking may bring relief without settling the worry.
In this fictional example, a person feels uncertain about their health, searches repeatedly and feels reassured briefly. A new doubt then restarts the search. This possible pattern helps explain why more reassurance may not resolve the difficulty.
Fictional examples to explain an experience. They are not a checklist or a diagnosis.
Uncertainty
A health concern becomes hard to put aside.
Checking or reassurance
The person looks for a definite answer.
Temporary relief
The reassurance feels helpful for a while.
Renewed doubt
Another uncertainty prompts further checking.
Based on NHS
Medical assessment and help for worry can work together.
A professional considers your medical health, the fears, how long they have persisted and their effect on life. A diagnosis needs more than repeated worry or a screening score.
The Health Anxiety Inventory family has different versions. A health-anxiety measure describes worry; it cannot rule out illness or decide whether you should seek medical care. Ask which exact version is used and how it fits the conversation.
Based on MSD Manual Professional · Salkovskis and colleagues · Abramowitz and colleagues
- 1What keeps returning?
The concern you want help understanding.
- 2What is affected?
A concrete example of worry interrupting your day.
- 3What guidance helps?
A shared plan for worry, follow-up and changes in symptoms.
Appropriate medical care and support for worry can coexist.
A clinician should consider medical concerns as well as the effects of anxiety. The label must not become a reason to dismiss new or changed physical symptoms.
Ask how to handle new changes, when to return and who will coordinate care. A planned follow-up conversation can make the process clearer without promising certainty about every sensation.
Based on MSD Manuals
Make space for a shared plan, rather than endless certainty.
You and your clinician can discuss what fits your needs, preferences and health.
Based on NHS · MSD Manual Professional
Therapy can work on the relationship with uncertainty.
CBT may help explore worry, checking and avoidance, and their effects on everyday life. It does not require assuming that a particular physical symptom is harmless.
Discuss goals such as spending less time caught in searches or returning to a meaningful activity. The clinician can help decide which approach fits your health and circumstances.
Medical questions
What needs evaluation and what follow-up is appropriate.
Worry patterns
How checking, reassurance or avoidance affect your day.
Shared goals
What you want support to make easier.
Based on NHS · MSD Manuals
You can describe the cost of the worry without listing diseases.
For example, tell the clinician that searching is displacing sleep or making it hard to focus. You do not have to bring a catalogue of possible illnesses to show that the distress matters.
Ask for help with both the uncertainty and the process of seeking care. Repeating a questionnaire for reassurance cannot establish medical safety.
Based on NHS · MSD Manuals
A little clarity. A place to start.
Explore a tool, prepare a conversation or find someone to talk to. Choose what feels useful to you.
Prepare for a conversation
A few prompts to help you explain what you have noticed and what you would like help with.
- A simple notes builder
- Copy your notes to keep
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You decide how much to write and share.
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Find supportYour first sentence does not need to be perfect.
Choose one example of how worry changes your day, and one question about care. You can ask for help even if you are unsure whether the term illness anxiety disorder applies.
Based on NHS
“My health worries are taking over my day. Can we make a plan for both the worry and any symptoms that need assessment?”Make it sound like you
Your questions, with room for nuance.
You can read just the answer you need.
Does this page show that my symptoms are harmless?
No. It cannot assess physical symptoms. New or changed concerns should receive appropriate medical advice.
Based on MSD Manuals
Is asking for medical advice always reassurance seeking?
No. Appropriate assessment and follow-up matter. Discuss the pattern and its impact with a clinician rather than judging each question in isolation.
Based on MSD Manuals
Can health anxiety involve avoiding appointments?
Yes. Avoidance can be part of the experience, as well as repeated checking. Tell a service what makes attending difficult.
Based on NHS
Should I keep repeating a health-anxiety test until I feel certain?
A score cannot provide medical certainty or rule out illness. If repeated checking is taking over your day, discuss that pattern with a professional.
Based on NHS · MSD Manuals
Where this information comes from.
Use this hub to learn and prepare questions. It does not diagnose you or recommend a personal treatment plan. By Selfmora editorial; sources checked . Updated .
Additional explanations and examples: sources consulted . Examples illustrate ideas; they do not assess your personal health. Your questions
- Health anxiety
- Illness anxiety disorder
- Original Health Anxiety Inventory development
- Short Health Anxiety Inventory: non-clinical validation